Southern House Spider

Fascinating facts about the Southern House Spider

• Southern house spiders can squeeze through openings as narrow as 0.66 cm because their elongated bodies and compact legs are extremely slender. This ability lets them infiltrate the tiniest cracks in walls, foundations and other structures. Females usually remain hidden in radial webs built around crevices, while males wander in search of food and mates. Their crevice-weaving habit gives them both shelter and a stealthy hunting base.
• A female southern house spider produces a single clutch of about 129 eggs, each measuring roughly 1.37 mm in diameter and weighing 1.42 mg. The average female body mass is 347 mg, providing the nutritional resources needed for egg development. These eggs are deposited in the female's concealed crevice web, where she rarely leaves except to capture prey. The precise clutch size reflects the species' reproductive strategy.
• Unlike many spiders, the southern house spider does not spin adhesive silk; it is a cribellate species whose spinnerets lack glue. Instead it uses its legs to comb silk across a spiked plate called the cribellum, fraying the fibres into a fine, velcro-like mesh. This tangled netting catches the legs of insects that stumble into it, immobilising prey without any sticky coating. The technique allows the spider to capture food while remaining hidden in its crevice web.
• Male southern house spiders often look aggressive because they rush over anything in their path, but they will only bite if they become trapped. Their mouthparts are tiny, making it difficult for them to pierce human skin. The spiders are almost blind, so they cannot see larger animals and simply crawl over them. When threatened they instinctively play dead, a tactic that deters predators.
• The mating ritual of the southern house spider lasts over an hour and is highly elaborate, with the pair remaining almost motionless for long intervals. After an initial confrontation, the wandering male builds a large web around the female's crevice and then continuously pulls the strands to coax her out, a process that can take several minutes. Once she emerges, the two spiders tap each other with their forelegs while the male stays suspended in his web.

Sources

Every fact above was checked against these pages, and kept only where one of them states it.

• Wikipedia

At a glance

About the Southern House Spider

In the shadowy recesses of human habitations, the Southern House Spider weaves its unassuming domain, a masterful architect of intricate webs that shimmer like gossamer tapestries in the faint light. With deliberate, almost languid movements, this spider navigates its silky realm, ever-vigilant for the slightest tremor that might signal the presence of unsuspecting prey. As it glides effortlessly across its web, the Southern House Spider embodies a paradox of fragility and cunning, a testament to the enduring allure of life in the hidden corners of our everyday world.

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